static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
const LangOptions &LangOpts,
const FrontendOptions &FEOpts,
MacroBuilder &Builder) {
if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP)
Builder.defineMacro("__STDC__");
if (LangOpts.Freestanding)
Builder.defineMacro("__STDC_HOSTED__", "0");
else
Builder.defineMacro("__STDC_HOSTED__");
if (!LangOpts.CPlusPlus) {
if (LangOpts.C11)
Builder.defineMacro("__STDC_VERSION__", "201112L");
else if (LangOpts.C99)
Builder.defineMacro("__STDC_VERSION__", "199901L");
else if (!LangOpts.GNUMode && LangOpts.Digraphs)
Builder.defineMacro("__STDC_VERSION__", "199409L");
} else {
// FIXME: Use correct value for C++17.
if (LangOpts.CPlusPlus1z)
Builder.defineMacro("__cplusplus", "201406L");
// C++1y [cpp.predefined]p1:
// The name __cplusplus is defined to the value 201402L when compiling a
// C++ translation unit.
else if (LangOpts.CPlusPlus14)
Builder.defineMacro("__cplusplus", "201402L");
// C++11 [cpp.predefined]p1:
// The name __cplusplus is defined to the value 201103L when compiling a
// C++ translation unit.
else if (LangOpts.CPlusPlus11)
Builder.defineMacro("__cplusplus", "201103L");
// C++03 [cpp.predefined]p1:
// The name __cplusplus is defined to the value 199711L when compiling a
// C++ translation unit.
else
Builder.defineMacro("__cplusplus", "199711L");
// C++1z [cpp.predefined]p1:
// An integer literal of type std::size_t whose value is the alignment
// guaranteed by a call to operator new(std::size_t)
//
// We provide this in all language modes, since it seems generally useful.
Builder.defineMacro("__STDCPP_DEFAULT_NEW_ALIGNMENT__",
Twine(TI.getNewAlign() / TI.getCharWidth()) +
TI.getTypeConstantSuffix(TI.getSizeType()));
}
// In C11 these are environment macros. In C++11 they are only defined
// as part of <cuchar>. To prevent breakage when mixing C and C++
// code, define these macros unconditionally. We can define them
// unconditionally, as Clang always uses UTF-16 and UTF-32 for 16-bit
// and 32-bit character literals.
Builder.defineMacro("__STDC_UTF_16__", "1");
Builder.defineMacro("__STDC_UTF_32__", "1");
if (LangOpts.ObjC1)
Builder.defineMacro("__OBJC__");
// OpenCL v1.0/1.1 s6.9, v1.2/2.0 s6.10: Preprocessor Directives and Macros.
if (LangOpts.OpenCL) {
// OpenCL v1.0 and v1.1 do not have a predefined macro to indicate the
// language standard with which the program is compiled. __OPENCL_VERSION__
// is for the OpenCL version supported by the OpenCL device, which is not
// necessarily the language standard with which the program is compiled.
// A shared OpenCL header file requires a macro to indicate the language
// standard. As a workaround, __OPENCL_C_VERSION__ is defined for
// OpenCL v1.0 and v1.1.
switch (LangOpts.OpenCLVersion) {
case 100:
Builder.defineMacro("__OPENCL_C_VERSION__", "100");
break;
case 110:
Builder.defineMacro("__OPENCL_C_VERSION__", "110");
break;
case 120:
Builder.defineMacro("__OPENCL_C_VERSION__", "120");
break;
case 200:
Builder.defineMacro("__OPENCL_C_VERSION__", "200");
break;
default:
llvm_unreachable("Unsupported OpenCL version");
}
Builder.defineMacro("CL_VERSION_1_0", "100");
Builder.defineMacro("CL_VERSION_1_1", "110");
Builder.defineMacro("CL_VERSION_1_2", "120");
Builder.defineMacro("CL_VERSION_2_0", "200");
if (TI.isLittleEndian())
Builder.defineMacro("__ENDIAN_LITTLE__");
if (LangOpts.FastRelaxedMath)
Builder.defineMacro("__FAST_RELAXED_MATH__");
}
// Not "standard" per se, but available even with the -undef flag.
if (LangOpts.AsmPreprocessor)
Builder.defineMacro("__ASSEMBLER__");
if (LangOpts.CUDA)
Builder.defineMacro("__CUDA__");
}
